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510(k) Data Aggregation

    K Number
    K241101
    Device Name
    BioButton System
    Date Cleared
    2024-09-26

    (157 days)

    Product Code
    Regulation Number
    870.2910
    Reference & Predicate Devices
    Predicate For
    N/A
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The BioButton System is a remote monitoring wearable device intended for continuous collection of physiological data in home and healthcare settings while the patient is at rest. This could include heart rate, respiratory rate, skin temperature, and other data such as activity level, body position, sleep, and step and gait analysis.

    Data are securely transmitted via wireless connection for storage, review, analysis, and display.

    The Device can include the ability to display data and notify healthcare professionals when physiological data fall outside clinician-specified parameters.

    The data from the Device are intended as an aid to diagnosis, disease management, and treatment. The Device is intended for use on patients who are 18 years of age or older.

    The Device is not intended to output physiological measurements while the patient undergoes significant motion or is active.

    The Device is not intended for critical care.

    Device Description

    The BioButton System (the "Device") is a wireless remote monitoring system intended for use by healthcare professionals for continuous collection of physiological data in home and healthcare settings while the patient is at rest. This can include heart rate, respiratory rate, and skin temperature. Data are transmitted from the Device for storage and analysis.

    The Device is an extension of the Predicate Device (K212957) with the same intended use. The Device consists of a multiple-use and rechargeable wearable hardware sensor module to collect data from a patient and other Medical Device Data System (MDDS) components that enables remote transfer of collected data. The main components of the Device include the following:

    1. A wearable sensor to collect data from a patient
    2. A device-based Medical Device Data System (MDDS) data gateway to transfer data from the wearable sensor to the cloud
    3. A cloud-based Medical Device Data System (MDDS) for data storage and transmission
    4. A cloud-based system for configuration of the wearable sensor and data analysis
    5. A cloud-based system for healthcare professionals to view patient information

    The Device is used to collect physiological information from a patient using the sensor for a set duration (as defined by different use cases) in home and healthcare settings. Physiological data is collected continuously while the patient is at rest. The medical physiological data collected includes:

    • Heart rate at rest,
    • Respiratory rate at rest, and
    • Skin temperature

    There are other wellness parameters that can be collected by the device that include: activity level, body position, sleep, and step and gait analysis. These wellness data types are not discussed in detail the regulatory submission since they do not meet the definition of medical device.

    Upon completion of a physiological data collection period, the data offload is conducted via wireless Bluetooth connection using the Offload Software. The data offloading is performed and qualified personnel. The Device also provides a web display for healthcare professionals to view patient information.

    AI/ML Overview

    The provided text is a 510(k) summary for the BioButton System, a remote monitoring wearable device. It describes the device, its intended use, and comparisons to a predicate device, along with performance testing conducted to support substantial equivalence.

    Based on the provided text, here's a detailed breakdown of the acceptance criteria and the study that proves the device meets them:

    1. A table of acceptance criteria and the reported device performance

    The document provides the following performance specifications for the BioButton System:

    Performance ItemAcceptance Criteria (Claimed)Reported Device Performance (Achieved)
    Heart Rate Range40-150 Beats per Minute40-150 Beats per Minute (Implied to be met, as it's the claimed range)
    Heart Rate Accuracy5 Beats per minute (<±5 Beats per minute)Met (Clinical studies confirmed accuracy claims for heart rate measurements)
    Respiratory Rate Range5-35 Breaths per Minute5-35 Breaths per Minute (Implied to be met, as it's the claimed range)
    Respiratory Rate Accuracy3 Breaths per Minute (<±3 Breaths per Minute) at restMet (Clinical studies confirmed accuracy claims for respiratory rate measurements)
    Skin Temperature StandardMeets ASTM E1112-00 standardMet (Benchtop testing)
    Skin Temperature Range86°F - 107°F (30°C - 42°C)Met (Benchtop testing)

    Note: The document states that "all subgroups independently met device accuracy claims for heart rate and respiratory rate measurements" in the clinical studies section, which directly addresses the heart rate and respiratory rate accuracy criteria. For skin temperature, it explicitly says "Temperature measurement performance validation per ASTM E1112 standard per the Device's measurement range," indicating compliance.

    2. Sample size used for the test set and the data provenance

    • Sample Size: The clinical study for heart rate and respiratory rate involved 52 qualified subjects.
      • For heart rate, 1394 datasets were collected.
      • For respiratory rate, 1898 datasets were collected.
    • Data Provenance: The document does not explicitly state the country of origin. However, the FDA 510(k) submission process implies that the studies were conducted to US regulatory standards. The study was a clinical study performed on the general population, which means it was prospective data collection.

    3. Number of experts used to establish the ground truth for the test set and the qualifications of those experts

    The document does not specify the number of experts or their qualifications used to establish the ground truth for heart rate, respiratory rate, or skin temperature. It only states that clinical studies were performed to "confirm the measurement performance" and benchtop testing was done for temperature. This typically means the device's measurements were compared against a reference standard or validated method, rather than an expert consensus process.

    4. Adjudication method for the test set

    The document does not mention any adjudication method for the test set. Given the nature of physiological measurements (heart rate, respiratory rate, skin temperature), ground truth is usually established via highly accurate reference devices or methods, rather than expert adjudication.

    5. If a multi-reader multi-case (MRMC) comparative effectiveness study was done, If so, what was the effect size of how much human readers improve with AI vs without AI assistance

    No, a multi-reader multi-case (MRMC) comparative effectiveness study was not done. The BioButton System is a device for collecting physiological data, not an AI-assisted diagnostic tool that would typically involve human readers interpreting images. The closest relevant statement is that "The data from the device are intended as an aid to diagnosis, disease management, and treatment," but this does not imply a human-in-the-loop AI effectiveness study.

    6. If a standalone (i.e., algorithm only without human-in-the-loop performance) was done

    Yes, the performance testing described for heart rate, respiratory rate, and skin temperature is effectively a standalone (algorithm only) performance evaluation. The device's measurements are validated against a reference standard to confirm its accuracy, without directly involving human interpretation assisted by the device.

    7. The type of ground truth used (expert consensus, pathology, outcomes data, etc.)

    The type of ground truth used is implied to be concurrent measurement against a reference standard or validated method.

    • For heart rate and respiratory rate, the "clinical studies were performed... to confirm the measurement performance," which suggests comparison against a validated, highly accurate physiological monitoring system.
    • For skin temperature, it explicitly states "Temperature measurement performance validation per ASTM E1112 standard," indicating the use of a calibrated temperature reference.

    8. The sample size for the training set

    The document does not provide information regarding a separate training set or its sample size. This submission is for a 510(k) of a continuous physiological data collection device, not necessarily an AI/ML driven diagnostic device that would typically have distinct training and test sets in the same way. The performance data presented are from validation studies of the device itself.

    9. How the ground truth for the training set was established

    Since information about a specific training set and its sample size is not provided, how its ground truth was established is also not described in the document.

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    K Number
    K212957
    Device Name
    BioButton System
    Date Cleared
    2022-12-12

    (452 days)

    Product Code
    Regulation Number
    870.2910
    Reference & Predicate Devices
    Predicate For
    AI/MLSaMDIVD (In Vitro Diagnostic)TherapeuticDiagnosticis PCCP AuthorizedThirdpartyExpeditedreview
    Intended Use

    The BioButton System is a remote monitoring wearable device intended for continuous collection of physiological data in home and healthcare settings while the patient is at rest. This could include heart rate, respiratory rate, skin temperature, and other data such as activity level, body position, sleep, and step and gait analysis.

    Data are securely transmitted via wireless connection from the device for storage, review, and further analysis.

    The data from the device are intended as an aid to diagnosis, diseases management, and treatment.

    The device is intended for use on users who are 18 years of age or older.

    The device is not intended to output physiological measurements while the user undergoes significant motion or is active.

    The device is not intended for critical care.

    Device Description

    The BioButton System is a wireless remote monitoring system intended for use by healthcare professionals for continuous collection of physiological data in home and healthcare settings while the patient is at rest. This can include heart rate, respiratory rate, and skin temperature. Data are transmitted from the BioButton for storage and analysis.

    The BioButton System (the System), is an extension of the BioSticker System with the same/similar intended use. The System is intended to monitor physiological parameters of the patient/users for relatively long duration (up to 60 days with medical data collection). The System should now enable the connectivity with the BioButton sensor device (BBN) with the rest of the system components.

    The BioButton System consists of a single-use wearable hardware sensor module to collect data from a patient and other Medical Device Data System (MDDS) components that enables remote transfer of collected data. See main components of the BioButton System. The main components of the BioButton System could include the following:

    • BioButton Sensor -
    • -BioButton adhesives (accessory)
    • Data Exchange Hubs (MDDS) -
    • -Cloud-based data platform (MDDS)

    The BioButton System is used to collect physiological information from a patient using the BioButton Sensor for a set duration (as defined by different use cases) in home and healthcare settings. Physiological data is collected continuously while the patient is at rest¹. The medical physiological data collected includes:

    • . Heart rate at rest,
    • . Respiratory rate at rest, and
    • Skin temperature

    ¹ "At Rest" means the device will not output measurement data to the user undergoes significant motion or is active.

    There are other wellness parameters that can be collected by the device that include: activity level, body position, sleep, and step and gait analysis. These wellness data types are not discussed in detail the requlatory submission since they do not meet the definition of medical device.

    Upon completion of a physiological data collection period, the data offload is conducted via wireless Bluetooth connection using the Offload Software. The data offloading is performed and qualified personnel. Also using the Offload Software, a report will be generated to be viewed by a healthcare professional. The report is not intended to be viewed by the patient.

    AI/ML Overview

    The provided text describes the BioButton System, a remote monitoring wearable device, and its acceptance criteria as part of a 510(k) submission to the FDA. The information focuses on demonstrating substantial equivalence to a predicate device (BioSticker System K191614).

    Here's a breakdown of the requested information based on the provided document:

    1. Acceptance Criteria and Reported Device Performance

    The acceptance criteria for performance are clearly stated in the "Performance / Effectiveness" section (page 8).

    Comparison ItemsAcceptance Criteria (BioButton System)Reported Device Performance (BioButton System)
    Heart Rate Range40-125 Beats per Minute40-125 Beats per Minute (stated as "Same" as predicate, implying it meets this range)
    Heart Rate AccuracyMean absolute error of less than 5 Beats per minute (<±5 Beats per minute)Mean absolute error of less than 5 Beats per minute (<±5 Beats per minute) (stated as "Same" as predicate, implying it meets this criterion)
    Respiratory Rate Range10-30 Breaths per Minute10-30 Breaths per Minute (stated as "Same" as predicate, implying it meets this range)
    Respiratory Rate AccuracyMean absolute error of less than 3 Breaths per Minute (<±3 Breaths per Minute) at restMean absolute error of less than 3 Breaths per Minute (<±3 Breaths per Minute) at rest (stated as "Same" as predicate, implying it meets this criterion)
    Skin TemperatureMeets ASTM E1112-00 standard; Range 86°F - 107°F (30°C - 42°C)Meets ASTM E1112-00 standard; Range 86°F - 107°F (30°C - 42°C) (stated as "Same" as predicate, implying it meets this criterion)

    Beyond these explicit performance measures, the document also mentions compliance with various safety, EMC, biocompatibility, and software standards as "acceptance criteria" through compliance.

    2. Sample Size for the Test Set and Data Provenance

    The document states: "Clinical studies was performed on general population to confirm the measurement performance for heart rate and respiratory rate." (page 9)

    • Sample Size: The exact sample size for the clinical study (test set) is not specified in the provided text.
    • Data Provenance:
      • Country of Origin: Not specified.
      • Retrospective or Prospective: Not specified. "Clinical studies was performed" generally implies prospective data collection, but this is not explicitly stated.

    3. Number of Experts and Qualifications for Ground Truth

    This information is not provided in the given text. The document refers to "clinical studies" for performance confirmation but does not detail how the ground truth in these studies was established (e.g., number or qualifications of experts).

    4. Adjudication Method for the Test Set

    This information is not provided in the given text.

    5. Multi-Reader Multi-Case (MRMC) Comparative Effectiveness Study

    The document does not mention nor describe a multi-reader multi-case (MRMC) comparative effectiveness study, nor does it discuss human readers improving with or without AI assistance. The context is a device measuring physiological parameters, not an AI-assisted diagnostic imaging tool.

    6. Standalone Performance (Algorithm Only without Human-in-the-Loop)

    The study described for performance confirmation ("Clinical studies was performed on general population to confirm the measurement performance for heart rate and respiratory rate") seems to be evaluating the device's ability to measure these parameters directly. Since the device collects data and aids diagnosis, it inherently functions as a "standalone" measurement device in terms of its primary data collection function. The "report will be generated to be viewed by a healthcare professional" (page 5), implying a human-in-the-loop for interpretation, but the core measurement accuracy validation is for the device's output. Therefore, the "performance testing" described (clinical studies) can be considered a form of standalone performance evaluation for its measurement capabilities.

    7. Type of Ground Truth Used

    The document refers to "clinical studies" to "confirm the measurement performance for heart rate and respiratory rate." While not explicitly stated, in such device validation studies, the ground truth for physiological parameters like heart rate and respiratory rate would typically involve simultaneous measurement with a highly accurate, often gold-standard, reference device. This would be considered outcomes data / reference standard comparison rather than expert consensus or pathology in the context of physiological measurement devices.

    For skin temperature, it states "Meets ASTM E1112-00 standard," which is a standard for electronic thermometry, implying comparison to a reference standard or validated methodology.

    8. Sample Size for the Training Set

    The document does not mention or differentiate between a training set and a test set, nor does it provide a sample size specifically for a training set. This suggests that the submission focuses on the performance of the final device based on clinical validation, rather than detailing the machine learning model development process (if applicable beyond basic signal processing).

    9. How the Ground Truth for the Training Set Was Established

    Since a training set is not explicitly mentioned or detailed, the method for establishing its ground truth is not provided. The submission details performance testing and verification, implying the device's algorithms or measurement methods were developed prior to these validation studies.

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